-- File:	ParGenCurve.cdl
-- Created:	Mon Nov 18 09:41:29 1991
-- Author:	Remi GILET
--		<reg@topsn3>
---Copyright:	 Matra Datavision 1991

generic class ParGenCurve from GccGeo (TheCurve as any)

    ---Purpose: Definition of a virtual curve.

uses Pnt2d  from gp,
     Vec2d  from gp
     
is

Create returns ParGenCurve;

Create(C : TheCurve) returns ParGenCurve;

Create(C : TheCurve               ;
       D : Real     from Standard ) returns ParGenCurve;

Value(me; U : Real)returns Pnt2d;
    --- Purpose : Computes the point of parameter U on the curve 

D1 (me; U : Real; P : out Pnt2d from gp ; V : out Vec2d from gp);
    --- Purpose : Computes the point of parameter U on the curve with its
    --  first derivative.

D2 (me; U : Real; P : out Pnt2d from gp ; V1,V2 : out Vec2d from gp);
    --- Purpose : Computes the point of parameter U on the curve with its
    --  first derivative and second derivative.


FirstParameter(me)  returns Real;
    	
LastParameter(me) returns Real;

GetResolution(me) returns Real;

GetIntervals(me) returns Integer;

fields

Cu  : TheCurve              ;
Dep : Real     from Standard;

end ParGenCurve;